Members of the superclass or group Gnathostomata, which includes all jawed fish and their descendants (vertebrates with jaws).
From Greek gnathos (jaw) plus stoma (mouth), referring to the evolutionary branch of animals that developed jaws; a scientific classification term.
Gnathostomi literally means 'jaw-mouths,' and they're basically all the animals with actual jaws—from fish to humans—which is why we're way more successful than jawless creatures!
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